MY127693A - Communication system - Google Patents

Communication system

Info

Publication number
MY127693A
MY127693A MYPI20010458A MYPI0100458A MY127693A MY 127693 A MY127693 A MY 127693A MY PI20010458 A MYPI20010458 A MY PI20010458A MY PI0100458 A MYPI0100458 A MY PI0100458A MY 127693 A MY127693 A MY 127693A
Authority
MY
Malaysia
Prior art keywords
signal
data
data streams
frequency band
divided
Prior art date
Application number
MYPI20010458A
Inventor
Mitsuaki Oshima
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of MY127693A publication Critical patent/MY127693A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/183—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2604—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems

Abstract

AT THE TRANSMITTER (5) SIDE, CARRIER WAVES ARE MODULATED ACCORDING TO AN INPUT SIGNAL FOR PRODUCING RELEVANT SIGNAL POINTS IN A SIGNAL SPACE DIAGRAM. THE INPUT SIGNAL IS DIVIDED INTO, TWO, FIRST AND SECOND, DATA STREAMS. THE SIGNAL POINTS ARE DIVIDED INTO SIGNAL POINT GROUPS TO WHICH DATA OF THE FIRST DATA STREAM ARE ASSIGNED. ALSO, DATA OF THE SECOND DATA STREAM ARE ASSIGNED TO THE SIGNAL POINTS OF EACH SIGNAL POINT GROUP. A DIFFERENCE IN THE TRANSMISSION ERROR RATE BETWEEN FIRST AND SECOND DATA STREAMS IS DEVELOPED BY SHIFTING THE SIGNAL POINTS TO OTHER POSITIONS IN THE SPACE DIAGRAM EXPRESSED AT LEAST IN THE POLAR COORDINATE SYSTEM. AT THE RECEIVER (33, 43) SIDE, THE FIRST AND/OR SECOND DATA STREAMS CAN BE RECONSTRUCTED FROM A RECEIVED SIGNAL. IN TV BROADCAST SERVICE, A TV SIGNAL IS DIVIDED BY A TRANSMITTER (5) INTO, LOW AND HIGH, FREQUENCY BAND COMPONENTS WHICH ARE DESIGNATED AS A FIRST AND A SECOND DATA STREAMS RESPECTIVELY. UPON RECEIVING THE TV SIGNAL, A RECEIVER (33, 43) CAN REPRODUCE ONLY THE LOW FREQUENCY BAND COMPONENT OR BOTH THE LOW AND HIGH FREQUENCY BAND COMPONENTS, DEPENDING ON ITS CAPABILITY. FURTHERMORE, A COMMUNICATION SYSTEM BASED ON AN OFDM SYSTEM IS UTILIZED FOR DATA TRANSMISSION OF A PLURALITY OF SUBCHANNELS, WHEREIN THE SUBCHANNELS ARE DIFFERENTIATED BY CHANGING THE LENGTH OF A GUARD TIME SLOT (797) OR A CARRIER WAVE INTERVAL OF A SYMBOL TRANSMISSION TIME SLOT (796), OR CHANGING THE TRANSMISSION ELECTRIC POWER OF THE CARRIER. (FIGURE 1)
MYPI20010458A 1993-03-25 1994-03-25 Communication system MY127693A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP6646193 1993-03-25
JP13298493 1993-05-10
JP26161293 1993-09-24

Publications (1)

Publication Number Publication Date
MY127693A true MY127693A (en) 2006-12-29

Family

ID=27299135

Family Applications (10)

Application Number Title Priority Date Filing Date
MYPI20010459A MY127271A (en) 1993-03-25 1994-03-25 Multiresolution transmission, in particular with multicarrier signals
MYPI20010456A MY127695A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010457A MY127507A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010454A MY127270A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010458A MY127693A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010452A MY127274A (en) 1993-03-25 1994-03-25 Multiresolution transmission system
MYPI20010455A MY138048A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010451A MY141572A (en) 1993-03-25 1994-03-25 Multiresolution transmission with multicarrier signals
MYPI20010450A MY127504A (en) 1993-03-25 1994-03-25 Multiresolution transmission, in particular for multicarrier systems
MYPI20010453A MY127503A (en) 1993-03-25 1994-03-25 Communication system

Family Applications Before (4)

Application Number Title Priority Date Filing Date
MYPI20010459A MY127271A (en) 1993-03-25 1994-03-25 Multiresolution transmission, in particular with multicarrier signals
MYPI20010456A MY127695A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010457A MY127507A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010454A MY127270A (en) 1993-03-25 1994-03-25 Communication system

Family Applications After (5)

Application Number Title Priority Date Filing Date
MYPI20010452A MY127274A (en) 1993-03-25 1994-03-25 Multiresolution transmission system
MYPI20010455A MY138048A (en) 1993-03-25 1994-03-25 Communication system
MYPI20010451A MY141572A (en) 1993-03-25 1994-03-25 Multiresolution transmission with multicarrier signals
MYPI20010450A MY127504A (en) 1993-03-25 1994-03-25 Multiresolution transmission, in particular for multicarrier systems
MYPI20010453A MY127503A (en) 1993-03-25 1994-03-25 Communication system

Country Status (5)

Country Link
EP (1) EP0617531A1 (en)
CN (16) CN100373829C (en)
CA (16) CA2382460A1 (en)
HK (6) HK1039012B (en)
MY (10) MY127271A (en)

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FR2731572B1 (en) * 1995-03-10 1997-06-27 France Telecom SIGNAL MODULE IN PHASE AND HIERARCHICAL OVERMODULATION, TRANSMISSION DEVICE AND CORRESPONDING RECEIVERS
JP3582139B2 (en) * 1995-03-31 2004-10-27 ソニー株式会社 Data demodulator and data transmission method
US6118827A (en) * 1997-09-05 2000-09-12 Ericsson Inc. Apparatus for providing increased data rates within existing modulation systems
WO2000007323A1 (en) * 1998-07-30 2000-02-10 Vocal Technologies, Ltd. Forward error correcting system with encoders configured in parallel and/or series
EP0987887B1 (en) * 1998-09-17 2009-09-16 Panasonic Corporation Digital tv broadcast receiving apparatus, and transmitting and receiving system
GB0401475D0 (en) * 2004-01-09 2004-02-25 Koninkl Philips Electronics Nv Method of signalling
DE102005044970A1 (en) * 2005-09-20 2007-03-22 Robert Bosch Gmbh Method for transmitting and receiving information in a digital transmission system, and a receiving device and a transmission device for a digital transmission system
ES2560872T3 (en) 2007-08-01 2016-02-23 Sirius Xm Radio Inc. Overlay modulation technique for COFDM signals based on amplitude compensation
CN101635947B (en) * 2009-08-27 2011-08-31 深圳市云海通讯股份有限公司 Method and system for counting telephone traffic and server
JP5708312B2 (en) * 2011-07-05 2015-04-30 セイコーエプソン株式会社 projector
US9112662B2 (en) * 2013-01-17 2015-08-18 Samsung Electronics Co., Ltd. Overhead reduction for transmission of acknowledgment signals
ITTO20130729A1 (en) * 2013-09-09 2015-03-10 Rai Radiotelevisione Italiana METHOD AND SYSTEM FOR SATELLITE SIGNAL TRANSMISSION AND ITS RECEIVER
ES2936459T3 (en) * 2014-09-25 2023-03-17 Huawei Tech Co Ltd Data Communication Procedure and Related Apparatus
CN105471527B (en) * 2015-11-12 2018-05-25 福州大学 A kind of wireless communications method that can be achieved across standard traffic
JP6762171B2 (en) * 2016-08-31 2020-09-30 浜松ホトニクス株式会社 Data creation device, optical control device, data creation method, and data creation program
EP3735746A1 (en) 2018-01-23 2020-11-11 Huawei Technologies Co., Ltd. Channel code construction for decoder reuse
CN115842927B (en) * 2023-02-24 2023-06-06 湖北芯擎科技有限公司 Video stream safety display method and device and electronic equipment

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Also Published As

Publication number Publication date
MY127274A (en) 2006-11-30
CN1305313A (en) 2001-07-25
CN1115048C (en) 2003-07-16
CA2652487A1 (en) 1994-09-26
CA2382460A1 (en) 1994-09-26
CN1305310A (en) 2001-07-25
CA2652875A1 (en) 1994-09-26
CA2445707C (en) 2008-10-21
CA2653282C (en) 2009-08-25
CA2653289C (en) 2009-08-11
CA2636575A1 (en) 1994-09-26
CN1206857C (en) 2005-06-15
MY127695A (en) 2006-12-29
MY127503A (en) 2006-12-29
CN1893414B (en) 2010-05-12
HK1039012B (en) 2006-01-13
CA2652486C (en) 2009-08-11
CN1225908C (en) 2005-11-02
CN1941680A (en) 2007-04-04
CA2652880C (en) 2009-10-20
CN1913406B (en) 2013-04-03
CA2259818A1 (en) 1994-09-26
HK1039852B (en) 2006-03-10
CA2653282A1 (en) 1994-09-26
HK1039851A1 (en) 2002-05-10
CN100563132C (en) 2009-11-25
CA2652609A1 (en) 1994-09-26
CN102130868A (en) 2011-07-20
CN1208964C (en) 2005-06-29
CA2652602A1 (en) 1994-09-26
CN1964240A (en) 2007-05-16
MY138048A (en) 2009-04-30
CN1913406A (en) 2007-02-14
CN102130868B (en) 2012-08-29
CN1913407A (en) 2007-02-14
MY127507A (en) 2006-12-29
MY127270A (en) 2006-11-30
CA2259818C (en) 2004-05-18
CA2652880A1 (en) 1994-09-26
CN1913407B (en) 2011-08-10
HK1039852A1 (en) 2002-05-10
CA2652609C (en) 2009-10-06
CN1305311A (en) 2001-07-25
HK1039851B (en) 2006-07-21
CA2445707A1 (en) 1994-09-26
HK1039012A1 (en) 2002-04-04
CN1607751A (en) 2005-04-20
MY127504A (en) 2006-12-29
CA2653269A1 (en) 1994-09-26
CN1305312A (en) 2001-07-25
MY141572A (en) 2010-05-14
CA2652487C (en) 2009-08-11
CN1617475A (en) 2005-05-18
HK1039850A1 (en) 2002-05-31
CA2652596A1 (en) 1994-09-26
CN1964240B (en) 2013-03-20
CA2652488C (en) 2010-05-18
CN1099544A (en) 1995-03-01
CA2652596C (en) 2010-07-27
CN1893414A (en) 2007-01-10
CA2652875C (en) 2009-09-15
MY127271A (en) 2006-11-30
CN1909544A (en) 2007-02-07
CA2652488A1 (en) 1994-09-26
CA2653269C (en) 2009-10-06
CA2652876C (en) 2009-09-15
CN1250278A (en) 2000-04-12
CA2652602C (en) 2009-11-10
CA2652876A1 (en) 1994-09-26
EP0617531A1 (en) 1994-09-28
CA2636575C (en) 2010-01-12
HK1103321A1 (en) 2007-12-14
HK1039850B (en) 2006-01-13
CA2653289A1 (en) 1994-09-26
CA2652486A1 (en) 1994-09-26
CN1240220C (en) 2006-02-01
CN100373829C (en) 2008-03-05
HK1103183A1 (en) 2007-12-14
CN102208959A (en) 2011-10-05

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